Margin-printing mechanism



July 2, 1929.'

A. R. vlcKERs,

MARGIN PRINTING MECHANISM Filed Jan. 24, 1928 3 Sheets-Sheet `1 July`21929.

A. R. vlcKERs MARGIN PRINTING MECHANISM Filed Jan. 24, 192s s sheets-sheet 2 Vl C HER nventor Gttorneg July 2,v 1929. A. R. vlcKERs MARGIN PRINTING MECHANISM Filed Jan. 24, 1928 5 ShetS-Sheet 3 be clamped in place with facility and then adjusted to insure accuracy in the performance of its functions.

The ink is transferred from the reservoir or fountain 9 by means of the ink fountain roll 19, the composition roller and the plate roller 21, which latter transfers the ink to the web, along its margin, as the web passes over the impression cylinder. The fountain roll 19 is located within the reservoir and projects therefrom a sufficient distance for co-operation withthe composition roll 2O j located outside the reservoir. The fountain rollis fixed to revolve with its shaft 22, that is journaled in the walls of the reservoir or fountain,'and the gear 8 is carried by this shaft 22.

' y The quantity of ink carried by the ink roller 19 and transferred to the composition roller, is regulated by means of a cut off or adjustable slide :plate 23, supported in the top of the reservoir in line with the'roll 19, and adapted to be slid toward and away from the roll for varying the .quantity of ink carried on the periphery of the ink roller. This slide plate has a downturned, perforated end or flange 24 overhanging the back wall of the reservoir yor fountain, and anadjusting bolt 25, passed Athrough this perforated vflange and threaded into a complementary socket in the wall of the reservoir, is used to move the slide plate in or out with relation to the roller 19. By

. means of a lock nut 26 on the bolt and engaging the face of the reservoir, the plate may be locked in its desired adjusted position for regulating the ink carried by the ink roller 19. The beveled-edge plate roller is supported in proper relation to the impression cylinder 4, above the reservoir-or fountain and revolves vwith its shaft 27 in bearings 28 preferably formed integral with the top of the reservoir or fountain and spaced at opposite sides thereof. n

The shaft 29 for thecomposition roller 2O is journaled in an adjustable bearing block or slide 30 located in the guide slot 31 of the supporting arm 32. This arm has a hole 33 for the shaft 27 and a hole 34 (Fig. 5) for the bolt 35, which bolt. at lits end is threaded into a perforated and threaded lug 36 rigid with the reservoir. vThus the arm 32 may be swiveled ony the shaft 27 and by means of the slot 34 ofthe arm the latter maybe swung slightly of course on its pivot 27 to vary the relationship between gears 7 and 8 and rollers 19 and`20. y

F or adjusting the composition roller with relation to the plate roller vto regulate the transfer of ink' from the former to the latter, a screw bolt 37 carried by the 'plate 32 is threaded into theslide or bearing block 30, and lock nuts 38 on the bolt are used to hold the bolt and bearing block in adjusted position.

The reservoir and its rollers and gears and other parts, are adapted to be swung, through the lugs 10 and caps 11, on the tie rod 3, to bring the mechanism into or out of operative position, and for this purpose the cam bolt or eccentric bolt 39 of Figure G is used and turned by means of a handle or lever 40 fixed on the threaded end of the eccentric bolt. The bolt is j ournaled to turn in a bearing boss 41 fashioned integral with the bracket arm 15, and the bolt has a cam head or .eccentric head 42 and concentric retaining head 43 as best seen in Figure 6. The eccentric head 42 of the bolt is located between the forks 44 of a bearing yoke or plate 45 which is attached as by bolts 45 to a portion of the reservoir or fountain walls, and it will bc apparent that by turning the bolt 39 through lever 40 the eccentric head 42 co-acting with its yoke 44, the mechanism may be swivelcd on the tie rod 3, for the purpose described. A lock nut 4G on the eccentric bolt may be turned with its lever 47 to lock the mechanism in adjusted position, and a stop bolt 48 on the reservoir is set by means of the lock nut 49, to engage against a portion of the bracket arm 15 as a positive stop in the adjustment for pressure between the plate roll and the impression cylinder.

Having thus fully described the invention, what is claimed herein is- 1. A printing attachment for rotary presses comprising an ink reservoir and means for swiveling the reservoir with relation to the rotary press, means for retaining the attachment in adjusted position, means for limiting the adjustment of said attachment, a plate roller supported on the reservoir for co-action with the rotary press, and inking devices for transferring ink from the reservoir to the plate roller.

2. The combination with a rigid support forming part of a rotary printing press, of a swiveled ink-reservoir and an ink roll therein, a composition roll and a plate roll whereby the ink is transferred from the plate roller to the web on the impression cylinder of the press, means for adjusting the ink-reservoir to vary the relation between the plate roller and impression cylinder, and means for limiting the adjustment of the ink-reservoir.

3. An attachment for a printing' press comprising an ink-reservoir and an ink roller haring its shaft journalcd in the reservoir walls, a composition roller, adjustable means for regulating the quantity of ink carried by the ink roller for transfer to the composition roller, means for adjusting the composition roller with relation to the ink roller, a plate roller adapted to receive ink from the composition roller and means for adjusting the relation of the composition roller to the plate roller.

4. The combination in a printing attachment with a plate roll and its shaft, of an arml er, e shaft for the composition roller and a bearing block for' said shaft glideble n the arm, means for adjusting the slide bearingblock, and means for adjusting the swiveled arm.

5. The combination with an ink reservoir annk roller therein and a shaft for the roller joulnaled n the Walls of the reservoir', of a slide plate in the top of the reservoir for 10 re ulatn .the uantt of ink carried on the g g L1 y ABRAM RQ VICKERS. 

